MPEG-4 Profiles and Levels - A Practical Guide to Video and Audio Compression - page 667

Table G-1 MPEG-4 Parts and Amendments (Continued)

Part Amendment Description

2 Advanced text and 2D graphics.

3 Audio BIFS extensions.

4 XMT and MPEG-J extensions.

12 ISO base media-file format.

1 File format extensions and guidelines.

13 Intellectual Property Management and Protection (IPMP) extensions.

14 MP4 file format.

15 Advanced Video Coding (AVC) file format.

16 Animation Framework eXtension (AFX).

17 Streaming text format.

18 Font compression and streaming.

19 Synthesized texture stream.

20 Lightweight Application Scene Representation

21 MPEG-J Extension for rendering

Many implementers are only considering a few parts and not all the available capa-
bilities that the standard defines. To implement the entire standard would be a major chal-
lenge for any company.

G.3 MPEG-4 Part 2 Profiles and Levels

Note that we are only discussing the visual profiles. MPEG-4 also supports other pro-
files for audio, graphics, and scene graphs. These are beyond the scope of our discus-
sions on video compression. They will be of interest to content producers who are
aggregating compressed video with other asset types to create interactive multimedia
presentations.

G.3.1 Natural Visual Profiles

These profiles describe video that has been filmed or is based on what we normally think
of as a frame-based video session.